The Bianconeri improved their club record with a 12th consecutive Serie A victory, but the Blucerchiati made them work for the 4-2 result.
"I think we did well to prepare this game the right way, otherwise it would've been really tough to beat this Sampdoria tonight," the Coach told Sky Sport Italia.
"It's a shame, as we have to work on the fact most of their chances - and those scored by Cagliari last week - came from corners. We cannot dominate games and always have this anxiety from set plays.
"This problem has only really emerged recently with Cagliari and Samp. The Blucerchiati caused us a great deal of trouble from corners tonight and they deserve compliments for that.
"We created numerous scoring opportunities, got four goals again to show we are a team who like to play, to attack and that means leaving some spaces at the back."
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